nanog mailing list archives
RE: Confussion over multi-homing
From: Paul Froutan <pfroutan () rackspace com>
Date: Thu, 14 Sep 2000 16:09:09 -0500
At 9/14/00 -0400, Richard Welty wrote:
> Wouldn't one of the ISPs have to advertise a longer prefix? actually, to do it right, both have to advertise the longer prefix -- or more specifically, they have to both make holes in their filters permitting the multi-homed site to advertise them. this is what we're doing in our Troy, NY facility -- we have 2 upstreams, and we have a /24 from one of them, which both of them pass through.
What you can do is get permission from the ISP that provides you the IPs (say ISP A) so you can have other ISPs announce your blocks. You also need to get ISP A to deaggregate your block and announce it separately into the global BGP table. We did this back in the day and it works fine if the ISP giving you IPs is somewhat reasonable and helpful.
---------------------------------------------------------------------- Paul Froutan Email: pfroutan () rackspace com Rackspace Managed Hosting <http://www.rackspace.com>
Current thread:
- Confussion over multi-homing David Lott (Sep 14)
- Re: Confussion over multi-homing Geoffrey Zinderdine (Sep 14)
- Re: Confussion over multi-homing jlewis (Sep 14)
- <Possible follow-ups>
- RE: Confussion over multi-homing Roeland M.J. Meyer (Sep 14)
- RE: Confussion over multi-homing Tony Tauber (Sep 14)
- Re: Confussion over multi-homing Austin Schutz (Sep 15)
- RE: Confussion over multi-homing Tony Tauber (Sep 14)
- RE: Confussion over multi-homing Richard Welty (Sep 14)
- RE: Confussion over multi-homing Paul Froutan (Sep 14)
- Re: Confussion over multi-homing Brantley Jones (Sep 14)
- Re: Confussion over multi-homing dan (Sep 15)
- Re: Confussion over multi-homing Sean Donelan (Sep 14)
- Re: Confussion over multi-homing John Fraizer (Sep 14)
- Re: Confussion over multi-homing Patrick Evans (Sep 15)
- Re: Confussion over multi-homing John Fraizer (Sep 15)
- Re: Confussion over multi-homing John Fraizer (Sep 14)
- RE: Confussion over multi-homing Roeland M.J. Meyer (Sep 15)
- RE: Confussion over multi-homing Dmitri Krioukov (Sep 15)
- Re: Confussion over multi-homing David Lott (Sep 15)
- Re: Confussion over multi-homing Alex Pilosov (Sep 15)
- RE: Confussion over multi-homing Dmitri Krioukov (Sep 15)